Add UMA stats for new Print Preview UI elements.

printing/print_job_constants.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "printing/print_job_constants.h"
 
 namespace printing {
 
 // True if this is the first preview request.
 const char kIsFirstRequest[] = "isFirstRequest";
@@ skipping 77 matching lines @@
 
 // Key that specifies the requested media height in microns.
 const char kSettingMediaSizeHeightMicrons[] = "height_microns";
 
 // Key that specifies the requested media width in microns.
 const char kSettingMediaSizeWidthMicrons[] = "width_microns";
 
 // Key that specifies the requested media platform specific vendor id.
 const char kSettingMediaSizeVendorId[] = "vendor_id";
 
+// Key that specifies whether the requested media is a default one.
+const char kSettingMediaSizeIsDefault[] = "is_default";
+
 // Key that specifies the bottom margin of the page.
 const char kSettingMarginBottom[] = "marginBottom";
 
 // Key that specifies the left margin of the page.
 const char kSettingMarginLeft[] = "marginLeft";
 
 // Key that specifies the right margin of the page.
 const char kSettingMarginRight[] = "marginRight";
 
 // Key that specifies the top margin of the page.
@@ skipping 77 matching lines @@
 const char kGreyscale[] = "Greyscale";
 const char kMonochrome[] = "Monochrome";
 const char kNormal[] = "Normal";
 const char kNormalGray[] = "Normal.Gray";
 const char kRGB[] = "RGB";
 const char kRGBA[] = "RGBA";
 const char kRGB16[] = "RGB16";
 #endif
 
 }  // namespace printing